Could be modified to no stack items created in backpack if color is different?
I think this thing should be modified also in pol96.

I don't know if i understood you right.
But i think you could simply use GetItemDescriptor(objtype); from polsys.em

I could use 3-4 commands to create an item, but it is better to use one.
CreateItemInBackpack() decide itself it create a new stack or ad an existing.
BUt it ha a bug that add to a previous stack also if colors are differentes.
I think the right solution is that 2 item with different color can't be in he same stack.
After one can use much workaround to solve the problem. But simplier solutions is better.

That is odd since I don't think you can drag an item of a different colour onto a stack.